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Finding the Fourth Proportional to 85,442.59, 117,905.02 and 51,444.55

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Solution

The fourth proportional to 85,442.59, 117,905.02 and 51,444.55 is: 70,990.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,442.59 : 117,905.02 = 51,444.55 : x
  2. Step 2: Convert to fraction form
    85,442.59/117,905.02 = 51,444.55/x
  3. Step 3: Cross multiply
    85,442.59x = 117,905.02 × 51,444.55
  4. Step 4: Simplify right side
    85,442.59x = 6,065,570,696.64
  5. Step 5: Solve for x
    x = 6,065,570,696.64/85,442.59
  6. Step 6: Final answer
    x = 70,990.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.